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United States Patent | 5,031,416 |
Drucker ,   et al. | July 16, 1991 |
A refrigeration expansion valve meters the flow of refrigerant therethrough through a flexible orifice that varies in cross-sectional area as a function of the pressure differential across the valve.
Inventors: | Drucker; Alan S. (Dewitt, NY); Cann; Peter L. (Canastota, NY) |
Assignee: | Carrier Corporation (Syracuse, NY) |
Appl. No.: | 535692 |
Filed: | June 10, 1990 |
Current U.S. Class: | 62/324.1; 62/324.6; 62/511; 62/527 |
Intern'l Class: | F25B 013/00 |
Field of Search: | 62/324.1,324.6,511,527 137/493.3,493.4,493.5,493.9,513.3 251/121 138/45 |
2241086 | May., 1941 | Gould | 62/511. |
2933905 | Apr., 1960 | Simmons | 62/511. |
2939487 | Jun., 1960 | Fraser et al. | 62/511. |
3017903 | Jan., 1962 | Steffens | 62/527. |
4263787 | Apr., 1981 | Domingorena | 62/324. |
4341090 | Jul., 1982 | Ramakrishnan | 62/324. |
4633681 | Jan., 1987 | Webber | 62/324. |